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Fluid Injection (2 substances)

Posted Aug 14, 2011, 5:09 p.m. EDT Version 4.1, Version 4.2 3 Replies

Melanie Pigeon
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My model has a series of tubular conduits. I want a time dependent model that begins with simple water passing in the coils followed by an injection of contrast. What is the best approach to implement this?
3 Replies Last Post Aug 15, 2011, 1:52 p.m. EDT
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago Aug 15, 2011, 1:20 a.m. EDT
Hi

well CFD is not my specality, but for the methodology approach, my suggestion would be to solve a stationary flow water only first and use that as initial conditions for a transient 2 phase mixing solver physics as second step

And I woud use the latest version, it has enhanced CFD capabilities w.r.t the earler v4 releases ;)

--
Good luck
Ivar
Hi well CFD is not my specality, but for the methodology approach, my suggestion would be to solve a stationary flow water only first and use that as initial conditions for a transient 2 phase mixing solver physics as second step And I woud use the latest version, it has enhanced CFD capabilities w.r.t the earler v4 releases ;) -- Good luck Ivar
Melanie Pigeon
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Posted: 1 decade ago Aug 15, 2011, 9:31 a.m. EDT
Hi Ivar,

I already have a solution to the stationary water only model. For the mixing though, how do I implement the appropriate boundary conditions or tell the program what two fluids are present and at what locations. Sorry but I am a newby and I am not sure how to make this model. Is there any sample model you can refer me to for mixing or fluid injection?
Hi Ivar, I already have a solution to the stationary water only model. For the mixing though, how do I implement the appropriate boundary conditions or tell the program what two fluids are present and at what locations. Sorry but I am a newby and I am not sure how to make this model. Is there any sample model you can refer me to for mixing or fluid injection?
Ozgur
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Posted: 1 decade ago Aug 15, 2011, 1:52 p.m. EDT
Take a look at the "micromixer" model example.

Ozgur
Take a look at the "micromixer" model example. Ozgur

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